Clamp for poles or columns.



UNITED STATES JOHN LANZ, OF PITTSBUBG, PENNSYLVANIA, ASSIGNOR TO THECARNEGIE PATENT OFFICE.

STEEL COMPANY, LIMITED, 01? SAME PLACE.

I CLAMP-FOR POLE SjOR COLUMNS.

SPECIFICATION forming {at of Letters Patent No. 634,693, dated October10, 1899. Application filed February 23,1 99, Serial No. 706,458. on.model.)

To all whom it may concern:

- Be it known that 1, JOHN LANZ, of Pitts-.

burg, in the county of Allegheny and State of Pennsylvania, haveinvented a new anduseful Improvement in Clamps for Poles or (Job umns,of which the following is a full, clear,

and exact description, reference being had to the accompanying drawings,forming part of this specification, in which- Figure 1 is a partial sideelevation of a column provided with my improved clamp-, and

Fig. 2 is a horizontal cross-section of the same.-

My invention relates to the securingof span-wires, insulators, or otherdevices to poles or columns composed of a metal shape or shapes havingflanges, and is designed to tion provided with a central reverse or V-shaped fold 3 and provided with channelsa i,

secured to its flanges and each having a central fold 5. This form ofpole is shown and claimed in my copending application, Serial No.690,368, filed September 6, 1898; but it is evident that my improvedclamp may be usedwith any metal pole or column having flanges.

The clamp itself consists of two collars or hollow castings 6 6,.havinghook-shaped ends 7 and provided with a through-bolt 8, which extendsthrough the holes in the castings and by which the hooks are drawn intoengagement with the outwardly-extending flanges ofthe pole.

I show my device as arranged for securing telegraph or telephone wiresto the pole, in this case each casting 6 having formed integraltherewith a plate 9, having a hole 10 located outside the lines of theclamp proper. The cross-piece or insulator-support is laid upon the flatupper faces of these plates and secured by bolts extending through theirholes. If desired, in leading the wire from the pole at an angle to theportion leading to the pole a similar clamp may be applied to theopposite side of the pole, one of the castings having the upper plate,and another cross-piece may be secured to this opposite clamp audio thecross-piece upon the clamp shown, the opposite clamp being placed at aslightlyhigher level than the one shown. The second cross-piece willthus extend at right angles to the first, and by securing the wire to aninsulator mounted upon one arm and thence to an insulator mounted uponthe other its angle may be changed as desired.

' In securing span-wires the castings may be made without the plates andare then prefer ably formed with lugs, through which another bolt-ispassed and to which the spanwire extends. The plates 9 may be formedinto extended arms and the insulators secured directly to these arms,doing away with the necessity for separate cross-arms.

The advantages of my invention result from the simple construction ofthe device and its cheapness of manufacture, as well as its being placedupon the pole without the necessity of forming holes in the flanges. Theclamp may therefore be easily and quickly adjusted to small fractions ofan inch.

Many variations may be made in .the form' and shape of the hooked clampswithout departing from my invention, since I claim 1. A clamp for polesor columns, eompris iug two hooks arranged to engage the flanges of thepole and having their shanks in line with each other, said hooks beingof sufficient width to prevent twisting and a single bolt exterior tothe line of the flanges and extending through both hook-shanks, to'drawthem Iowa-rd each other substantially as described.

2. A clamp for poles or columns, comprising two hooks arranged to engagethe flanges, each hook having asupporting-plate for a cross-piece, and abolt exterior to the flanges and engaging the shanks of both hooks todraw them toward each other; substantially as described.

In testimony whereof I have hereunto set my hand.

JOHN LANZ.

Witnesses:

G. B. BLEMMING,

M. S. MURPHY.

